Performance Analysis for STAR-RIS-assisted-UAV-empowered Networks under Nakagami-m Fading

Reconfigurable intelligent surface (RIS) promises to improve the received signal-to-interference-plus-noise ratio by manipulating the phase shift of the incident wave. However, the traditional RIS can only reflect the signal by one side and the other half space is blocked. Fortunately, the emerging simultaneous transmitting and reflecting RIS (STAR-RIS) can solve this problem. STAR-RIS supports to reflect and transmit the signal at the same time and then realize the 360-degree coverage. In this paper, we analyze the performance of STAR-RIS assisted unmanned aerial vehicle (UAV) empowered wireless communication systems, including the outage probability and the ergodic achievable rate. The general fading channels, i.e., the Nakagami-m fading channels are considered. We first derived the closed-form expression of the outage probability and the ergodic achievable rate, and then explore a series of insights. The numerical results verify the correctness of our analytical expressions by Monte Carlo simulations.